As per Bhagavata, he was Brahma’s son. According to Jaimini, in Ashwamedhaparva, once, when the sage Jamadagni was conducting shraadh rites, Krodha reached there and mixed poison in the milk the sage had kept for the sacrifice. Jamadagni understood this, but didn’t become angry. Krodha begged for forgiveness and said that he had heard that all Bhargava sages were hot tempered and now knew it to be false. Jamadagni asked him to bear the pitr anger himself. As per the pitr curse he was forced to be born in a nakulayoni and attained his real form much later in Dharma’s court in the presence of Krishna.